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And now the Boeing 777...

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langwadt:

--- Quote from: WattsThat on March 04, 2021, 01:44:50 am ---Blancolirio’s interview with the captain of UAL 1175. Spoiler alert: this earlier fan blade failure was uncontained, unlike the failure over Denver. After watching this video, all I can say is wow, I did not know how close they were to ditching. So many things went the right way. Well worth the time to watch.

--- End quote ---

afaiu none of them were technically uncontained, the blade didn't go through the shield around the fan

SilverSolder:

--- Quote from: james_s on March 04, 2021, 05:09:20 am ---
--- Quote from: SilverSolder on March 04, 2021, 02:50:59 am ---
Can planes catch Covid??

--- End quote ---

I do have some concerns about planes sitting idle due to the pandemic. I had quite a bit of experience working with cars that sat for extended periods, it doesn't do them any favors. Seals dry out, lubricants degrade, metals oxidize, tires get flat spots, all sorts of stuff happens. I don't think I'd want to be on the first few flights on a plane that had been mothballed if I could help it.

--- End quote ---

Yes, it is amazing how cars dislike being ignored - they are almost like ladies in that way!  :D

coppice:

--- Quote from: james_s on March 04, 2021, 05:09:20 am ---
--- Quote from: SilverSolder on March 04, 2021, 02:50:59 am ---
Can planes catch Covid??

--- End quote ---

I do have some concerns about planes sitting idle due to the pandemic. I had quite a bit of experience working with cars that sat for extended periods, it doesn't do them any favors. Seals dry out, lubricants degrade, metals oxidize, tires get flat spots, all sorts of stuff happens. I don't think I'd want to be on the first few flights on a plane that had been mothballed if I could help it.

--- End quote ---
As Neil Young so wisely observed, Rust Never Sleeps.

Retep:

--- Quote from: james_s on March 04, 2021, 05:09:20 am ---I do have some concerns about planes sitting idle due to the pandemic. I had quite a bit of experience working with cars that sat for extended periods, it doesn't do them any favors. Seals dry out, lubricants degrade, metals oxidize, tires get flat spots, all sorts of stuff happens. I don't think I'd want to be on the first few flights on a plane that had been mothballed if I could help it.

--- End quote ---
My understanding is (based on what was said on one of the YouTube channels - I think it was Mentour Pilot) that engines are started every 3 weeks or so and also that commercial planes have to be flown every once in a while, otherwise they would loose their airworthiness certificate and have to be re-certified when they are put back into use.

SiliconWizard:

--- Quote from: Retep on March 04, 2021, 03:08:53 pm ---
--- Quote from: james_s on March 04, 2021, 05:09:20 am ---I do have some concerns about planes sitting idle due to the pandemic. I had quite a bit of experience working with cars that sat for extended periods, it doesn't do them any favors. Seals dry out, lubricants degrade, metals oxidize, tires get flat spots, all sorts of stuff happens. I don't think I'd want to be on the first few flights on a plane that had been mothballed if I could help it.

--- End quote ---
My understanding is (based on what was said on one of the YouTube channels - I think it was Mentour Pilot) that engines are started every 3 weeks or so and also that commercial planes have to be flown every once in a while, otherwise they would loose their airworthiness certificate and have to be re-certified when they are put back into use.

--- End quote ---

Yes. I've heard from a couple specialists that planes sitting "idle" for weeks or even months was not that rare these days, even before the pandemic, due to large differences in trafic depending on the season for some companies. So they are normally used to take care of planes just parked for extended periods of time.

Now it'll still be interesting to know whether the Covid crisis did actually have an influence even on this routine maintenance. It's not at all unlikely. In particular, I'd really be curious to know if maintenance in general didn't significantly drop as air trafic droped... even though idle planes definitely need very regular maintenance. Whereas, as said above, this kind of maintenance was a common thing before Covid, the sheer number of parked planes has obviously increased a lot, so that increased this parked plane maintenance a lot, which companies were probably not ready for - while their revenue plumetted. So yeah. I'm curious if those incidents will at all tell us something about that.

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